Storage battery.



J. L. a; M. o. SMITH. STORAGE BATTERY. APPLICATION FILED JULY 20,1903.

903,799. T Patented Noi-10, 1908,

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-loooIloool ooolhooonoooloool Y ATTORNEYS YUNITED 'STATES .are f 'l OFFQE.

. JOHN L. SMITH AND MALCON O SMITH, OF CLEVELAND, OHIO.

STORAGE BATTERY.

Specification of Letters Patent.

Patented Nov. 10, 1908.

Application filed July 20, 1908. Serial N o. 444,447.

provements in Storage Batteries, of which the following is a specification, reference being had therein to the accompanying drawings. p

This inventiony relates to electric storage batteries of the cell type and is. specifically designed to meet the requirements for vehicular use with the special object in. view to make a battery that can be taken out, cleaned and replaced without taking the vehicle out of commissionand which is able to withstand the severe test in heavy power regulation. To this end the invention consists in the construction arrangement and operation of certain parts for accomplishing the desired object, all as more fully hereinafter described and shown in the accompanying drawings, in which The end plates are formed by solid lead sheets having the ,active material and the holding sheet thereof applied to vonly one side and they are also provided with suitable lead plates are set into vframes 7 of soft rubber or other elastic non-conducting material, the frames being provided upon their inner faces with grooves S of sulicient size and spaced apart by these soft rubber frames 7 and hard rubber frames 9 of the same size as the frame 7 but of less thickness are interposed between said frames. The frames 9 perform the oflice of mud guards by having the vertical dimension of of the bottom bar of the frames 7 so that it projects into the space between the lead. plates.' The space between each pair of lead plates contains a separator fitting the dimensions of the same, each consists of two thin perforated hard rubber sheets 1l and interposed vertical partition strips 12 of hard rubber spaced at intervals apart from each Figure l is a cross section of a bipolar plate electrode used in the battery, Fig. 2 is a detached elevation of oneof the two perforated lead sheets for holding the active ma'- terial, Fig. 3 is an elevation of the insulating supporting frame for the electrodes, Fig. t is an elevation of one of 'the separators and its accompanying mudguard, Figs. 5 and 6 are horizontal and vertical sections of Fig. 4 on line afl-41: andYg/-g/ respectively,.Fig. 7 is a fragmentary vertical section of the separator without the mud guard. Figs. 8 and -9 are horizontal and vertical sections respectively through the battery as a whole.

, The battery. is divided into cells by vertical lead-plates which have sides of opposite polarity. and consist of a central solid lead sheet l and of Vtwo perforated lead sheets 2 secured upon opposite sides thereof and of sufficiently smaller area tov leave a free projecting margin 3 around the edges thereof. The lead sheets 2 have raised edges 4 and corresponding intersecting ribs 5 upon the side towards the central sheet and the recesses formed thereby contain the active material. Suitable Vholes 6 may be formed in these sheets for securing the sheets together by means of lead rivets passing through them or they may be secured to the central sheet by soldering along the edges or in any other desired manner.

other and united to the sheets. To permit the separator to straddle the mud separator is grooved in its bottom ceive the mud guard. A separator thus constructed is light, stiff and suitably flexible and the vertical passages between the spacedge to reing strips form ample space for the elec-v trolyte.

The elements may be assembled into an .operative structure in holding them in fixed relation to each other as by clamping them together between suitable clamping plates without using an outer receptacle, but we prefer to place the battery into a receptacle 13 of aluminum after clamping the elements together between two clamping plates 14. These are preferablygrooy'fed upon their outer faces whereby the elements after being assembled between the clamping plates and firmly clamped together ina press can be bound together by inserting wires 15 into the grooves and tying the ends thereof together by suitable ties or by merely hooking or twisting the ends together at the sides. The battery can then be placed into the receptacle andby means of blocks 16 inserted at the corners at one or both ends it is firmly fastened therein. The remaining empty space or spaces may be lled vwith sand or other material. In this way the battery is firmly held in position in the receptacle and terminals for electric connection. These.

depth to seat the marginal portions 3 of the y lead plates therein. The lead plates arev its bottom bar exceed that guard each any known manner of yet it can be readily removed and replaced as a Whole; further on account of the particular construction of. the separators it can be readily cleaned since by turning it on its side and using a hose it can be thoroughly washed out while in the present construction of batteries of this type it takes about a week to do seated, and a mud guard frame of nonelastic non-conducting material clamped between the plate'holdlng frames each frame being composed of two side bars, vand a bottom bar, the vertical dimension of the bottom bar of said mud guard frame being greater than that of the corresponding bars ofthe plate holding frames between which it is clamped.

- 2. 'A storage battery cell comprising two lead plates, two soft rubber frames having longitudinal grooves -in which the edges of the plates are seated and spacing the plates apart, a mud guard frame of hard .rubber clamped between the plate holding frames and having 'a bottom bar projecting into the space between the lead plates, and va sepaA rator of hard rubber contained in the space Y between the lead plates, its lower edge being grooved and straddl'ing the bottom bar of.

the mud guard frame.

3. In a storage battery, a bipolar battery element comprising a soft rubber frame provided with longitudinal grooves in its inner edges, two plate electrodes, one positive and one negative, and a solid lead plate interposed between the two and in metallic connection with the inner faces thereof, the two.

JOHN L. SMITH. Y MALGON O. SMITH.

Witnesses: R.- J. WARDNER,

F. LAssMAN. 

